Today, in clinical practice the diagnosis pancreatic cystic neoplasms are based on MDCT, MRI and ERCP followed by surgical exploration. The information gained by conventional imaging modalities is restricted to the morphological details, which usually is insufficient for the definitive staging of the pancreatic cystic neoplasms. Based on these previous studies, it seems that PET especially combined with CT modality could improve the diagnostic accuracy of the pancreatic cystic lesions.